Globally homochiral assembly of two-dimensional molecular networks triggered by co-absorbers.
Globally homochiral assembly of two-dimensional molecular networks triggered by co-absorbers.
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共吸收剂引发的二维分子网络的全局同手性组装
DOI：
10.1038/ncomms2403
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发表时间：
2013
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
理解手性诱导和放大过程，以及全局同手性表面的构建，是表面手性研究中的重要挑战。在这里，我们报告的诱导全局同手性在二维对映网络的非手性分子通过共组装与手性共吸收。扫描隧道显微镜研究和分子力学模拟表明，共吸收体的点手性通过对映选择性的超分子相互作用转化为组装单元的组织手性，然后分级放大为二维网络的全局同手性.网络组装的全局同手性显示非线性依赖于溶液相中手性共吸收剂的对映体过量，首次证明了液/固界面处非手性分子同手性控制的“多数规则”的有效性。这种诱导和非线性手性放大效应有望成为二维同手性控制的新途径，并可能揭示不对称多相催化，手性分离和手性结晶的重要见解。
Understanding the chirality induction and amplification processes, and the construction of globally homochiral surfaces, represent essential challenges in surface chirality studies. Here we report the induction of global homochirality in two-dimensional enantiomorphous networks of achiral molecules via co-assembly with chiral co-absorbers. The scanning tunnelling microscopy investigations and molecular mechanics simulations demonstrate that the point chirality of the co-absorbers transfers to organizational chirality of the assembly units via enantioselective supramolecular interactions, and is then hierarchically amplified to the global homochirality of two-dimensional networks. The global homochirality of the network assembly shows nonlinear dependence on the enantiomeric excess of chiral co-absorber in the solution phase, demonstrating, for the first time, the validation of the ‘majority rules’ for the homochirality control of achiral molecules at the liquid/solid interface. Such an induction and nonlinear chirality amplification effect promises a new approach towards two-dimensional homochirality control and may reveal important insights into asymmetric heterogeneous catalysis, chiral separation and chiral crystallization.
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影响因子：
15
作者：
Brunsveld, L;Meijer, EW;Moore, JS
通讯作者：
Moore, JS
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
De Feyter, Steven